Tender text

Compact pressure-boosting system in accordance with DIN 1988 and DIN EN 806, for direct or indirect connection. Consisting of non self-priming, switched in parallel, vertically-mounted stainless steel high-pressure multistage centrifugal pumps in glanded versions. Ready for connection with stainless steel pipework, mounted on a base frame, including control device with all necessary measurement and adjustment equipment.

For fully automatic water supply and pressure boosting in residential¬, commercial¬ and public buildings, hotels, hospitals, department stores and for industrial systems.

For pumping drinking water, process water, cooling water, fire water (apart from fire-extinguishing systems in accordance with DIN 14462 and with the approval of the local fire safety authorities) or other types of industrial water that do not attack the materials either chemically or mechanically and do not contain abrasive or long-fibre constituents.

Special features/product benefits

Heavy-duty system which satisfies all the requirements of DIN 1988 (EN 806)

WRAS/ KTW/ ACS approval of the pumps for all parts that come in contact with the fluid (EPDM version)

High-efficiency pump hydraulics of the Helix V series in conjunction with IE3 IEC standard motors

Bidirectional mechanical seals in the pumps for easy maintenance

Flexible lantern design permits direct access to the mechanical seal

The spacer coupling enables the mechanical seal to be replaced without dismantling the motor (from 7.5 kW)

Hydraulics of entire system are pressure-loss optimised

Parts that come in contact with the fluid are corrosion-resistant

Fully electronic Economy controller (CE) with microprocessor and LEDs to indicate the system status, analogue and digital inputs and outputs

H-0-A (manual-zero-automatic) switch: Preselection of the operating mode of the pump and manual operation in the event of a controller fault Manual (emergency/test mode available at mains power, motor protection available, automatic resetting), 0 (pump switched off – cannot be switched on via the controller) and Auto (pump enabled for automatic mode via the controller)

Monitoring

Conductivity test of the sensor cable

Phase failure monitoring

Motor current monitoring via converter in devices for direct start

Protection of the pump mains power feeds in devices for direct starting is provided via circuit breakers; in devices for star-delta starting it is provided via safety fuses and a contactor/motor protection relay combination

Monitoring of maximum and minimum system values with adjustable time delays and limits

Manual-0-Automatic switch Preselection of the operating mode of each pump and manual operation in the event of a controller fault "Manual" (emergency/test mode available at mains power, motor protection available), "O" (pump switched off – cannot be switched on using the controller) and "Auto" (pump enabled for automatic mode via the controller)